Mercurial > hg
annotate mercurial/commit.py @ 45204:ce9ee81df9ff
commitctx: extract _filecommit too
This function is exclusively used in `commitctx`. So we should extract it too
for consistency and to reduce the `localrepo` bloat.
This is part of a larger refactoring/cleanup of the commitctx code to clarify
and augment the logic gathering metadata useful for copy tracing. The current
code is a tad too long and entangled to make such update easy.
Differential Revision: https://phab.mercurial-scm.org/D8710
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Tue, 07 Jul 2020 00:18:15 +0200 |
parents | ae5c1a3bc339 |
children | d056a131c93f |
rev | line source |
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1 # commit.py - fonction to perform commit |
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2 # |
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3 # This software may be used and distributed according to the terms of the |
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4 # GNU General Public License version 2 or any later version. |
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5 |
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6 from __future__ import absolute_import |
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7 |
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8 import errno |
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9 import weakref |
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10 |
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11 from .i18n import _ |
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12 from .node import ( |
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13 hex, |
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14 nullid, |
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15 nullrev, |
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16 ) |
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17 |
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18 from . import ( |
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19 context, |
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20 mergestate, |
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21 metadata, |
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22 phases, |
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23 scmutil, |
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24 subrepoutil, |
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25 ) |
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26 |
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27 |
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28 def commitctx(repo, ctx, error=False, origctx=None): |
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29 """Add a new revision to the target repository. |
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30 Revision information is passed via the context argument. |
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31 |
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32 ctx.files() should list all files involved in this commit, i.e. |
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33 modified/added/removed files. On merge, it may be wider than the |
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34 ctx.files() to be committed, since any file nodes derived directly |
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35 from p1 or p2 are excluded from the committed ctx.files(). |
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36 |
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37 origctx is for convert to work around the problem that bug |
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38 fixes to the files list in changesets change hashes. For |
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39 convert to be the identity, it can pass an origctx and this |
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40 function will use the same files list when it makes sense to |
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41 do so. |
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42 """ |
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43 repo = repo.unfiltered() |
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44 |
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45 p1, p2 = ctx.p1(), ctx.p2() |
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46 user = ctx.user() |
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47 |
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48 if repo.filecopiesmode == b'changeset-sidedata': |
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49 writechangesetcopy = True |
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50 writefilecopymeta = True |
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51 writecopiesto = None |
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52 else: |
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53 writecopiesto = repo.ui.config(b'experimental', b'copies.write-to') |
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54 writefilecopymeta = writecopiesto != b'changeset-only' |
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55 writechangesetcopy = writecopiesto in ( |
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56 b'changeset-only', |
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57 b'compatibility', |
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58 ) |
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59 p1copies, p2copies = None, None |
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60 if writechangesetcopy: |
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61 p1copies = ctx.p1copies() |
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62 p2copies = ctx.p2copies() |
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63 filesadded, filesremoved = None, None |
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64 with repo.lock(), repo.transaction(b"commit") as tr: |
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65 trp = weakref.proxy(tr) |
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66 |
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67 if ctx.manifestnode(): |
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68 # reuse an existing manifest revision |
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69 repo.ui.debug(b'reusing known manifest\n') |
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70 mn = ctx.manifestnode() |
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71 files = ctx.files() |
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72 if writechangesetcopy: |
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73 filesadded = ctx.filesadded() |
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74 filesremoved = ctx.filesremoved() |
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75 elif not ctx.files(): |
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76 repo.ui.debug(b'reusing manifest from p1 (no file change)\n') |
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77 mn = p1.manifestnode() |
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78 files = [] |
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79 else: |
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80 m1ctx = p1.manifestctx() |
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81 m2ctx = p2.manifestctx() |
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82 mctx = m1ctx.copy() |
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83 |
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84 m = mctx.read() |
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85 m1 = m1ctx.read() |
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86 m2 = m2ctx.read() |
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87 |
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88 # check in files |
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89 added = [] |
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90 filesadded = [] |
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91 removed = list(ctx.removed()) |
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92 touched = [] |
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93 linkrev = len(repo) |
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94 repo.ui.note(_(b"committing files:\n")) |
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95 uipathfn = scmutil.getuipathfn(repo) |
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96 for f in sorted(ctx.modified() + ctx.added()): |
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97 repo.ui.note(uipathfn(f) + b"\n") |
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98 try: |
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99 fctx = ctx[f] |
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100 if fctx is None: |
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101 removed.append(f) |
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102 else: |
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103 added.append(f) |
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104 m[f], is_touched = _filecommit( |
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105 repo, fctx, m1, m2, linkrev, trp, writefilecopymeta, |
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106 ) |
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107 if is_touched: |
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108 touched.append(f) |
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109 if writechangesetcopy and is_touched == 'added': |
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110 filesadded.append(f) |
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111 m.setflag(f, fctx.flags()) |
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112 except OSError: |
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113 repo.ui.warn(_(b"trouble committing %s!\n") % uipathfn(f)) |
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114 raise |
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115 except IOError as inst: |
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116 errcode = getattr(inst, 'errno', errno.ENOENT) |
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117 if error or errcode and errcode != errno.ENOENT: |
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118 repo.ui.warn( |
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119 _(b"trouble committing %s!\n") % uipathfn(f) |
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120 ) |
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121 raise |
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122 |
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123 # update manifest |
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124 removed = [f for f in removed if f in m1 or f in m2] |
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125 drop = sorted([f for f in removed if f in m]) |
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126 for f in drop: |
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127 del m[f] |
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128 if p2.rev() != nullrev: |
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129 rf = metadata.get_removal_filter(ctx, (p1, p2, m1, m2)) |
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130 removed = [f for f in removed if not rf(f)] |
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131 |
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132 touched.extend(removed) |
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133 |
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134 if writechangesetcopy: |
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135 filesremoved = removed |
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136 |
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137 files = touched |
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138 md = None |
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139 if not files: |
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140 # if no "files" actually changed in terms of the changelog, |
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141 # try hard to detect unmodified manifest entry so that the |
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142 # exact same commit can be reproduced later on convert. |
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143 md = m1.diff(m, scmutil.matchfiles(repo, ctx.files())) |
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144 if not files and md: |
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145 repo.ui.debug( |
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146 b'not reusing manifest (no file change in ' |
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147 b'changelog, but manifest differs)\n' |
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148 ) |
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149 if files or md: |
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150 repo.ui.note(_(b"committing manifest\n")) |
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151 # we're using narrowmatch here since it's already applied at |
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152 # other stages (such as dirstate.walk), so we're already |
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153 # ignoring things outside of narrowspec in most cases. The |
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154 # one case where we might have files outside the narrowspec |
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155 # at this point is merges, and we already error out in the |
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156 # case where the merge has files outside of the narrowspec, |
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157 # so this is safe. |
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158 mn = mctx.write( |
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159 trp, |
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160 linkrev, |
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161 p1.manifestnode(), |
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162 p2.manifestnode(), |
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163 added, |
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164 drop, |
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165 match=repo.narrowmatch(), |
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166 ) |
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167 else: |
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168 repo.ui.debug( |
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169 b'reusing manifest from p1 (listed files ' |
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170 b'actually unchanged)\n' |
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171 ) |
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172 mn = p1.manifestnode() |
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173 |
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174 if writecopiesto == b'changeset-only': |
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175 # If writing only to changeset extras, use None to indicate that |
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176 # no entry should be written. If writing to both, write an empty |
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177 # entry to prevent the reader from falling back to reading |
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178 # filelogs. |
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179 p1copies = p1copies or None |
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180 p2copies = p2copies or None |
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181 filesadded = filesadded or None |
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182 filesremoved = filesremoved or None |
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183 |
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184 if origctx and origctx.manifestnode() == mn: |
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185 files = origctx.files() |
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186 |
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187 # update changelog |
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188 repo.ui.note(_(b"committing changelog\n")) |
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189 repo.changelog.delayupdate(tr) |
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190 n = repo.changelog.add( |
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191 mn, |
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192 files, |
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193 ctx.description(), |
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194 trp, |
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195 p1.node(), |
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196 p2.node(), |
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197 user, |
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198 ctx.date(), |
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199 ctx.extra().copy(), |
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200 p1copies, |
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201 p2copies, |
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202 filesadded, |
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203 filesremoved, |
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204 ) |
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205 xp1, xp2 = p1.hex(), p2 and p2.hex() or b'' |
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206 repo.hook( |
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207 b'pretxncommit', throw=True, node=hex(n), parent1=xp1, parent2=xp2, |
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208 ) |
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209 # set the new commit is proper phase |
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210 targetphase = subrepoutil.newcommitphase(repo.ui, ctx) |
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211 if targetphase: |
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212 # retract boundary do not alter parent changeset. |
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213 # if a parent have higher the resulting phase will |
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214 # be compliant anyway |
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215 # |
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216 # if minimal phase was 0 we don't need to retract anything |
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217 phases.registernew(repo, tr, targetphase, [n]) |
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218 return n |
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219 |
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220 |
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221 def _filecommit( |
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222 repo, fctx, manifest1, manifest2, linkrev, tr, includecopymeta, |
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223 ): |
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224 """ |
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225 commit an individual file as part of a larger transaction |
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|
226 |
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|
227 input: |
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228 |
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229 fctx: a file context with the content we are trying to commit |
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230 manifest1: manifest of changeset first parent |
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231 manifest2: manifest of changeset second parent |
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232 linkrev: revision number of the changeset being created |
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233 tr: current transation |
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234 individual: boolean, set to False to skip storing the copy data |
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235 (only used by the Google specific feature of using |
ce9ee81df9ff
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|
236 changeset extra as copy source of truth). |
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237 |
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238 output: (filenode, touched) |
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239 |
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240 filenode: the filenode that should be used by this changeset |
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241 touched: one of: None, 'added' or 'modified' |
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242 """ |
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243 |
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244 fname = fctx.path() |
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245 fparent1 = manifest1.get(fname, nullid) |
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246 fparent2 = manifest2.get(fname, nullid) |
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247 touched = None |
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248 if fparent1 == fparent2 == nullid: |
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249 touched = 'added' |
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250 |
ce9ee81df9ff
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251 if isinstance(fctx, context.filectx): |
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252 # This block fast path most comparisons which are usually done. It |
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253 # assumes that bare filectx is used and no merge happened, hence no |
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254 # need to create a new file revision in this case. |
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255 node = fctx.filenode() |
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256 if node in [fparent1, fparent2]: |
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257 repo.ui.debug(b'reusing %s filelog entry\n' % fname) |
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258 if ( |
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259 fparent1 != nullid and manifest1.flags(fname) != fctx.flags() |
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260 ) or ( |
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261 fparent2 != nullid and manifest2.flags(fname) != fctx.flags() |
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|
262 ): |
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263 touched = 'modified' |
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264 return node, touched |
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|
265 |
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266 flog = repo.file(fname) |
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267 meta = {} |
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268 cfname = fctx.copysource() |
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269 fnode = None |
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270 |
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271 if cfname and cfname != fname: |
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272 # Mark the new revision of this file as a copy of another |
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273 # file. This copy data will effectively act as a parent |
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274 # of this new revision. If this is a merge, the first |
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275 # parent will be the nullid (meaning "look up the copy data") |
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276 # and the second one will be the other parent. For example: |
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277 # |
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278 # 0 --- 1 --- 3 rev1 changes file foo |
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279 # \ / rev2 renames foo to bar and changes it |
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280 # \- 2 -/ rev3 should have bar with all changes and |
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281 # should record that bar descends from |
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282 # bar in rev2 and foo in rev1 |
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283 # |
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284 # this allows this merge to succeed: |
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285 # |
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286 # 0 --- 1 --- 3 rev4 reverts the content change from rev2 |
ce9ee81df9ff
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287 # \ / merging rev3 and rev4 should use bar@rev2 |
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288 # \- 2 --- 4 as the merge base |
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289 # |
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|
290 |
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291 cnode = manifest1.get(cfname) |
ce9ee81df9ff
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292 newfparent = fparent2 |
ce9ee81df9ff
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293 |
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294 if manifest2: # branch merge |
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295 if fparent2 == nullid or cnode is None: # copied on remote side |
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296 if cfname in manifest2: |
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297 cnode = manifest2[cfname] |
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298 newfparent = fparent1 |
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299 |
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300 # Here, we used to search backwards through history to try to find |
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301 # where the file copy came from if the source of a copy was not in |
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302 # the parent directory. However, this doesn't actually make sense to |
ce9ee81df9ff
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303 # do (what does a copy from something not in your working copy even |
ce9ee81df9ff
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304 # mean?) and it causes bugs (eg, issue4476). Instead, we will warn |
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305 # the user that copy information was dropped, so if they didn't |
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306 # expect this outcome it can be fixed, but this is the correct |
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307 # behavior in this circumstance. |
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308 |
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309 if cnode: |
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310 repo.ui.debug(b" %s: copy %s:%s\n" % (fname, cfname, hex(cnode))) |
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311 if includecopymeta: |
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312 meta[b"copy"] = cfname |
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313 meta[b"copyrev"] = hex(cnode) |
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314 fparent1, fparent2 = nullid, newfparent |
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315 else: |
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316 repo.ui.warn( |
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|
317 _( |
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318 b"warning: can't find ancestor for '%s' " |
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319 b"copied from '%s'!\n" |
ce9ee81df9ff
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|
320 ) |
ce9ee81df9ff
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|
321 % (fname, cfname) |
ce9ee81df9ff
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|
322 ) |
ce9ee81df9ff
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323 |
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324 elif fparent1 == nullid: |
ce9ee81df9ff
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325 fparent1, fparent2 = fparent2, nullid |
ce9ee81df9ff
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326 elif fparent2 != nullid: |
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327 # is one parent an ancestor of the other? |
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328 fparentancestors = flog.commonancestorsheads(fparent1, fparent2) |
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329 if fparent1 in fparentancestors: |
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330 fparent1, fparent2 = fparent2, nullid |
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331 elif fparent2 in fparentancestors: |
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332 fparent2 = nullid |
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333 elif not fparentancestors: |
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334 # TODO: this whole if-else might be simplified much more |
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335 ms = mergestate.mergestate.read(repo) |
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336 if ( |
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337 fname in ms |
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338 and ms[fname] == mergestate.MERGE_RECORD_MERGED_OTHER |
ce9ee81df9ff
commitctx: extract _filecommit too
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339 ): |
ce9ee81df9ff
commitctx: extract _filecommit too
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340 fparent1, fparent2 = fparent2, nullid |
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341 |
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commitctx: extract _filecommit too
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342 # is the file changed? |
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343 text = fctx.data() |
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344 if fparent2 != nullid or meta or flog.cmp(fparent1, text): |
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345 if touched is None: # do not overwrite added |
ce9ee81df9ff
commitctx: extract _filecommit too
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346 touched = 'modified' |
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commitctx: extract _filecommit too
Pierre-Yves David <pierre-yves.david@octobus.net>
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347 fnode = flog.add(text, meta, tr, linkrev, fparent1, fparent2) |
ce9ee81df9ff
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348 # are just the flags changed during merge? |
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349 elif fname in manifest1 and manifest1.flags(fname) != fctx.flags(): |
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parents:
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350 touched = 'modified' |
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351 fnode = fparent1 |
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352 else: |
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commitctx: extract _filecommit too
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353 fnode = fparent1 |
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commitctx: extract _filecommit too
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parents:
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354 return fnode, touched |